摘要
建立了气相色谱-质谱联用仪定量检测地表水及沉积物中7种典型有机磷酸酯阻燃剂的实验室分析检测方法:磷酸三丁酯(tri-n-butyl phosphate,Tn BP)、磷酸三异辛酯[tris(2-ethylhexyl) phosphate,TEHP]、磷酸三丁氧乙酯(tributoxyethylphosphate,TBEP)、磷酸三苯酯(triphenyl phosphate,TPh P)、磷酸三氯乙酯[tri(2-chloroethyl) phosphate,TCEP]、磷酸三氯丙酯(trichloropropyl phosphate,TCPP)、磷酸三(2,3-二氯丙基)酯(tridichloropropyl phosphate,TDCPP).方法回收率为76%～119%(表层水)和83%～126%(沉积物).采集并分析了成都市母亲河锦江的表层水及沉积物中7种有机磷酸酯(OPEs)的浓度及分布,发现其表层水中Σ7OPEs的浓度范围为689. 09～10 623. 94 ng·L^(-1),平均值为3 747. 58 ng·L^(-1).各单体浓度水平顺序为TBEP> TCEP> TPh P> TEHP> TCPP> Tn BP,其中浓度最高的单体TBEP占Σ7OPEs总浓度的36. 50%～95. 90%.沉积物中Σ7OPEs含量(以dw计)水平为25. 52～296. 00 ng·g^(-1),主要污染物为TBEP.沉积物相和水相中OPEs浓度没有显著的相关性,但均以烷基类OPEs为主. OPEs的分布主要受人为排放源的影响.表层水中TCPP和Tn BP、TBEP和TEHP、TCEP和TPh P两两之间可能存在共同的来源.
New GC-MS methods were developed for seven typical organophosphate esters(OPEs)including tri-n-butyl phosphate(Tn BP),tris(2-ethylhexyl)phosphate(TEHP),tributoxyethyl phosphate(TBEP),triphenyl phosphate(TPh P),tri(2-chloroethyl)phosphate(TCEP),trichloropropyl phosphate(TCPP)and tridichloropropyl phosphate(TDCPP).These methods were used to quantify their concentrations in the surface water and sediment from the Jinjiang River,Chengdu.The recoveries of the target substances were 76%-119%(surface water)and 83%-126%(sediments).Total OPEs(Σ7 OPEs)ranged from 689.09 to10 623.94 ng·L-1,with the mean of 3 747.58 ng·L-1 in the surface water.The pollution level of each monomer was in the order TBEP>TCEP>TPh P>TEHP>TCPP>Tn BP.TBEP was the predominant pollutant,accounting for 36.50%-95.90%of theΣ7 OPEs concentrations.The contents(dw)of theΣ7 OPEs ranged from 25.52 to 296.00 ng·g-1 in sediments,and TBEP was also the main pollutant in these samples.No significant correlation existed between the concentrations of OPEs in the surface water and sediments.Alkyl OPEs were the main pollutants in the surface water and sediments.The distribution of OPEs was influenced by the source of emissions and environmental attributes.The pairs TCPP and Tn BP,TBEP and TEHP,and TCEP and TPh P might have common sources in the surface water.
作者
吴迪
印红玲
李世平
王增武
邓旭
罗怡
罗林
WU Di;YIN Hong-ling;LI Shi-ping;WANG Zeng-wu;DENG Xu;LUO Yi;LUO Lin(College of Resources and Environment,Chengdu University of Information Technology,Chengdu 610225,China)
出处
《环境科学》
EI
CAS
CSCD
北大核心
2019年第3期1245-1251,共7页
Environmental Science
基金
国家自然科学基金项目(21407014
41773072)
成都信息工程大学大气环境模拟与污染控制重点实验室开放课题项目(KFKT2016001)
